An air conditioning unit is to be provided for a restaurant shown in the figure below. the restaurant is situated on the first floor of the building. the floor and ceiling are of 11.25 cm rcc + 11.25 cm lime concrete with 1.25 cm plaster on the inside with mass = 450 kg/m3 oc. the temperature on the ground floor and second floor and adjoining storage kitchen and rest room
is kept 3 oc higher than the room design condition. the following servey data is available at 6pm the peak load time. 15pt outside design condition: 42.7oc dbt, 27.1oc wbt, wo = 16.1 gms/kg inside design condition: 26.7oc dbt, w = 11 gms/kg occupancy at peak load: 100 people seated, 12 employee – medium activity. lights: 6000 watts daily range: 16 oc wall construction: 22.5 cm brick wall + 1.25 cm plaster on both sides, dark color, u = 2.01 w/m2 k, mass = 500 kg/m2 outside temperature at 3 pm = 42.7 oc. fan motor = 2.2 kw. duct heat gain = 4% of internal sensible heat gain. ordinary glass is used with u = 6.02 w/m2 k. inside ventilation blind are used as a shading device. find out the capacity of the plant, and shf for restaurant. location: north (shaded